<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<style>
		.main_container{
			display: flex;
			flex-wrap: wrap;
		}
		.model{
			width: 100px;
			height: 100px;
			margin: 20px;
		}
		.yuan{
			border-radius: 50%;
			background-color: #409EFF;
		}
		.zhengfangxing{
			background-color: #409EFF;
		}
		.fanzhuan{
			transform: rotate(-45deg);
			background-color: #409EFF;
		}
		.sanjiaoxing{
			width: 0;
			height: 0;
			background-color: transparent;
			border-left: 100px solid transparent;
			border-right: 100px solid transparent;
			border-bottom: 100px solid #409EFF;
		}
	</style>
	<body>
		<div class="main_container">
			<div class="model yuan">
				
			</div>
			<div class="model zhengfangxing">
				
			</div>
			<div class="model fanzhuan">
				
			</div>
			<div class="model sanjiaoxing">
				
			</div>
		</div>
	</body>
</html>